Cook stove



Patent Nov. 13, 1923.

UHTE

RUDOLBH HOFFMAN, F KANKAKEE, ILLINOIS,

Marea cerros.

nssIGNoa 'ro snails, Rona-ook .arm

C0., 0F CHICAGO, ILLINOIS, A CORPORATION OF NEW YOE:

Application led October 6, 1920. Serial No. 415,177."

To all whom imag-0mm.' i

Be it known that I, RUDOLPH HOFFMAN, a citizen of the United States, residing at Kankakee, in the county of Kankakee and State of Illinois, have 'invented certain new and useful Improvements in Cook Stoves, of which the following is a specification.

The invention relates in general to cook stoves and more especially to the means for upon the stove.

The principal aim of the invention is to provide an improved built-in hinge construction vwhich is particularly adapted for use in a stove constructed of sheet metal in that swingably mounting the oven door vor doors- -it obviates the necessity of employing any castparts. v

A further object of the invention 1s to 1 provide a construction of simple character,

efiic'ent in operation, durable and( presenting a neat and ornamental appearance.

The objects 'of the invention thus generally stated, together with other andv ancillary advantages, are attained by the construction and arrangement shown in the accompanying drawings forming part hereof in which Fig. 1 is aperspec'tive view of a cook stove embodying the invention. ,Fig. 2 is a fragmentary vertical sectional view' through the stove and through the hinge at one side of one of the stove ovens. Fig. 3 isa fragmentary perspective view of the stove. frame to which the hinge is applied.

Fig. 4 isa fragmentary perspective view of the lower corner ofthe door embodying certain portionsof the hinge. Flg, 5 A1s. a

perspective view of Vone of the hinge plates detached. Fig. 6 is a vperspective view 'of a housing'for the hinge parts. Fig. 7 is a fragmentary sectional view through the oven door 'j amb and a portion of the hinge. Figs. 8 and 8a are fragmentary perspective vlews 'illustrating details of the hinge construction. Fig. 9 is a fragmentary transverse secltional view, showing in particular the location of the door counterbalancing means.

The stove to which the invention is herein shown as applied, comprises two superimposed ovens 8 and 9 each closed by means of .a door 10 andl mounted for swinging movement upon Jthe stove by means'of hinges designated generally 11'. The stove Vto which the'invention is particularly applicable, is

constructed almost wholly of sheet metal.A

Thus the oven section proper is made from sheet metal and has la forward frame 12 having an intermediate cross bar 13 dividlng the oven section into the two compartments providing the ovens 8 and9. The

oors 10 are also constructed' for the most part of sheetmetal as particularly set forth f lthedoors 10. If desired, these jambs may beshaped to provide rabbet grooves 18 for `the reception of the outer inner edges of the doors and thus-forman effective seal when the doors are in closed position.

The means for swingably mounting the doors 10 for the ovens 8 and 9 are the same in` both cases so that only one hinge 'construction need be described. Such constructioncomprises a hinge member 19 rigid with the door and a hinge plate 20 secured to 'the door frame.

The hinge member 19 consists vof a sleeve 21 mounted upon a projecting portion 22 of one of the reinforcing bars 17, herein the bar 'for the lower portion of the door frame 14. To this'end, the bar 17 vfor the side portion of said frame 14 is apertured as at 23 and through this aperture the portion 22 extends beyond the outer lchannel wall ,.15 ofthe door frame. Said portion 22 carries sleeve 21, the latter being made of an' internal diameter to fit snugly over the portion 22. The sleeve is retained in position by bending the portion 22 at right angles, providing-an arm 24 which preferably extends upwardlyin the closed posi- .tion of the door,` for a purpose which will later appear. fThe plate member 2O is secured tothe .side bar of the frame 12 of the oven, as.

by means of bolts 25, and is shaped to provide a bearing 26 fitting neatly over the sleeve 2 1 which latter constitutes a journal for the door.

For the purposeof counterbalancingthe weight of the door to prevent its suddendescent into its open position, I preferably provide spring means consisting of a coiled outer 'channel walls lll@ gas

i which secure "the ing the spring means externally of the ovenit is removed from the intense and consequent injurious heat of the oven. To permit of the swinging movement of the arm 24 inwardly beyond the frame 12, the latter is apertured as at 29, the plate member 20 of the hinge being also cut away as at 3Q for this purpose. Preferably the spring means for the door is so arranged that when the door is swung into its open position (broken lines Fig. 2) the arm will be swung into or slightly beyond dead center with referenceto the spring 27 so that in this position the spring vmeans shall not effect 'a closing of the door.

For the purpose of-limiting the downward swinging movement of the door the bars 17 at the sides of the door frame 14 are provided with downwardly' extending fingers.. 31. Each fingerA is adapted, as the door is swung into vits o'pen position, to enter aA slot 32 (Figs. 3 and 7) the upper wall of which is so arranged as to form a stop 33 with which the finger is adapted to engage when the door reaches its horizontal position.

For/the purpos'e of enclosing the hinge parts, I provide a housing 34 shaped to permit of the swinging movements of the arm 24 land of. suicientlength to enclose the hinge Aplate 20. Preferably the housing is secured in position by means of the'bolts 25 plate 20 in position on the frame 412. .l To facilitate the operation of the door from its closed to its open position and vice versa, it maybe provided, as is usual, with a handle 35 of any preferred construction.

Itwill be seen that I have produced a v builtsin hinge construction which may be constructed without the use of castings;v

which is of .a simple character so that it may be cheapl manufactured; which is eflcient in' operation, and which presents, a neat and ornamental appearance. Whilefthe invention isl herein set forth with considerable particularity, it is contemplated that various changes may be made in the details of construction a'nd arrangement without departing from the `spirit and scolpe of the invention as expressed `in the" owing claims.

I claim as my invention: 1. vIn agcook stove or the like. the combination with a door frame, of a door constructed of sheet metal and having aframev with a pair ofrelative'ly fiat lateral projecltions one at each side near the lower edge of the frame and rigid therewith, means at opposite sides of the stove frame forming bearings, and cylindrical lmembers on the outer ends of said projections forming journals adapted to engage in saidkbearmgs.

2. In a cook stove or the like, the combination with a door frame, of a door constructed of sheet meta-l and having a'frame with a pair of lateral projections one at each side near thelower edge of the frame and rigid therewith, said projections having relatively sharp corners, means at opposite sides of the stove frame fOrmngbearingS,

cylindrical members 'on said projections forming journals adapted to engage in said bearings, the free end of one of said prolprojecting side walls, the outer side walls of said door framehav'ing rigid reinforcing bars extending beyond the lower edge of the door to formstop. fingers, journal members rigid with said bars, bearingiplates secured to the oven frame' and adapted to receive said journal members, and spring means for closin said door, said oven frame having a slotin its forward wall for receiving said stop linger on the door'one wall of which slot is adapted to be engaged by said finger so as to limit the downward movement ofthe door. 4

4. In combination with a frame providing a jamb, a door' comprising a frame constructed of sheet metal having walls projecting from the edges thereof having associated therewith ri id `reinforcing bars, the opposite side-bars eing of a lengthadapted to extend beyond the lower edge of the door and having apertures therein near their lower .ends and the bottom barhaving lateral extensions ada ted to ass through said apertures in the si e bars, caring plates secured to the oven frame' and adapted to re-.

ceive said lateral extensions on the doorv whereby to mount the door for swinging movement, said downwardly extending portions of the side bars of the door constituting stop fingers adapted to engage with the oven frame to limit the 'downward swinging` movementof the door.

1 5. In cmbination with a frame providing a jamb, a door comprising a frame constructed of sheet metal and bent to provide outer edge walls, said walls having associated therewith rigid reinforcing bars, the

opposite side bars being of a length adapted to extend beyond the lower edge lof the door and having apertures therein near their lower ends, and the bottom bar havinglateral extensions adapted to rpass through Said apertures in the side bars, bearing plates semovement, said downwardly extending portions of the sidebars of the door constituting stop fingers adapted to engage with the oven frame to' limit the downward swinging movement of the door, and housings se# cured to the 1 oven frame and adapted to enf 'close said bearing plates and the door journals.

6i In combination with aframe' providing a jamb, a door comprising a 'rame constructed of sheet metal having projecting outer walls` the outer walls ofjsaid door framehaving associated therewith rigid reinforcing bars, the opposite side bars being of a length adapted to extend beyond the lower'edge of the door and the bottom bar havinglateral extensions, bearing plates secured to the oven frame and adapted to receive' said lateral extensions on the door whereby to m'ount the door for swinging movement, said downwardly extending portions of the side bars of thev door constituting stop fingers adapted to .engage with. the oven stantially at right angles thereto, and sprin means connected with said frame to limit thev downward swinging movement of the door, an arm rigid with one of said lateral extensions and extending subarm adapted 'to close sal-id door.

7. In combination with a frame providing a jamb, a door comprising al frame constructed of st edge walls, tl e-bottom and sidewalls having associated therewith rigid bars` the opposite side bars being of a length adapted to ex. tend beyond the lower edge of the door, and the bottom bar: having lateral extensions,

bearing p1ates-securedto the oven frame Aand adapted to' receive said lateral exten- 'sions on the door whereby to -mount the door for swinging movement, s'ai d downwardly extending portions of the side 'bars of the door constituting stop fingers adapt-v ed to engage with the oven frame to limit the downward swinging movement of the "door, an arm rigid with one of said lateral j right angles thereto,

extensions and extending substantially at 'spring means connected with said arm adapted to close said door, and housings-secured to the oven frame so as to enclose said bearing plates and associatedvparts.

. 8. 'In combination with-a frame providlng a structed of sheet metal and bent to provide outer edge walls, said walls having associatedt'herewith rigid reinforcing bars. the op-,

posite side bars being of a' length adapted to extend beyond the lower edge of the door yet metal and 'having outer.

lsaid side bars jamb,ia door comprising a frame conand having `apertures therein near theirr lower ends.. and the bottom bar having lateral extensions adapted to passv through said apertures in the side bars, bearing plates secured to the oven frame and adapted to receive said lateral extensions on the door whereby to mount'A the door for swinging movement, said downwardly extending porltionsof the siderbars of the door constituting stop fingers adapted to engage with the oven frame to limit the downward swinging movement of the door, and said lateral extensions each having Arigid therewith a sleeve providing a journal adapted to engage in said bearing plate.

9, In combination, an oven'frame, a door adapted to engage with said frame to close the oven and comprising a frame formed from sheet metal bent' to provide outer inwardly extending anges, bars rigid with the flanges at the opposite sid'eedges of the door, a har rigid with the bottom fiange, said side bars being apertured and said bottom kbar bein'g'adapted to extend through said apertures tofprovide lateral extensions',

sleeves fixed upon -said lateral extensionsv j adapted to. engage with saidframe to close g .the oven 'and comprising a frame formed'. i

bent to provide outerin,`

from sheet'- metal wardly extending fianges, barsrigid with the fianges at the opposite side edges of the4 door,` a' bar rigid with-the ,bottom flange, said side bars being ajtierturedga n 'dl said bottom bar being adapted to 4extend through said apertures to provide lateral extensions,

sleeves 'fixed uponsaid lateral extensions to form journals'for the door` plates secured upon'the oven frame adapted to coact therewith to forma journal bearing .for said journals, an arm rigid with one of said vlateral extensions and extending at substantially right angles' thereto, and spring means onnected with said' arm adapted to close the' door:v

1 1. 'In combination, an oven frame, a door adapted vto engage with said frame to close the oven and comprisinga frame formed from sheet'metfal bent to provide outer inwardly extendingzvtlanges, bars rigid with the fianges at the. oppvosite'side edges of the door, a bar rigidf. w.ith the 'bottom'fianga beingjapertured and said bottom bar being adapted to'extend through said apertures to provide lateralextensions, sleeves mountedupon said lateral extensions -to form journals for `-the door, plates secured upon the oven frame adapted tocoact therewith to form a journal bearing for said journals, an arm rigid with one of said lateral extensionsand extending at substantial- '1y right angles thereto, spring means conneoted with said arm adapted to close the door, 'and .a stop finger rigid with one of saidl side bars depending from the lower edge of the door and adapted to engage With the oven frame to limit the downward swinging movement of the door.

4 12. The combination with an oven having a frame defining an opening to be closed, a door adapted to engage with said frame to closesaid opening, and a hinge structure comprising a bar fixed to the lower edge of the door having a portion extending out- WardljT from theside of the door, a .sleeve rigid with said lateral extension' to provide a journal, and a bearing platesecujed to theV oven frame and shaped to provide a'bearing for said journal.

In testimony whereof,' Ihaife hereunto set 

